State Library of NSW
Mitchell's 'Map of the Nineteen Counties' was compiled from 900 surveys, and engraved by himself and engraver John Carmichael, costing Mitchell nearly £1200. Mitchell wrote to Undersecretary Hay that, 'my map is nearly all on copper having been myself obliged to etch the hills and ranges as few engravers can do this satisfactorily.'
A copy of the map was submitted to Lord Stanley on 5th May 1834. Mitchell wrote, 'I consider it one of the most accurate specimens of constructive plan drawing ever produced of an extensive territory on the same scale. Having protracted my principal points, and reduced and filled in the contents of about 900 maps ... still in this office, and with which this reduction can be compared - I have produced a map which will answer all practical purposes for which accurate maps can be required - and especially for determining general lines for railways or great roads.'Votes and Proceedings, 1855, vol 2, Inquiry into the S.G.'s Dept., p. 8.